MANUFACTURE OF LENS, LENS MANUFACTURING DEVICE USED IN THE METHOD, GRINDING WHEEL FOR MANUFACTURING LENS, AND FIXED DISC FOR MANUFACTURING LENS

PROBLEM TO BE SOLVED: To provide a high-efficient and stable optical precision lens at a low cost. SOLUTION: One surface of a lens material 5 having size large enough to allow production of lenses with a plurality of optical lenses arranged is integrally machined in a spherical state to form an outside spherical surface part. The lens material 5 is held by a holding device, and a grinding wheel 31 is rotated centering around a grinding wheel rotary axis T. By a so formed grinding device, grinding is executed through advance and withdrawal as rotation is effected to orderly manufacture a plurality of lens material individual pieces 40 with the device arranged such that the extension line of the grinding wheel rotary shaft T passes the core 2a of the outside spherical part. Thereafter, the reflection surface of the lens material individual piece 40 is machined to produce a desired optical lens.